Storing carry-on baggage in overhead lockers on Jetstar flights will cost as much as $52 one-way, as the budget airline announces new charges for passengers. From February 2, Jetstar will lift its seven kilo carry-on weight limit in favour of a size-based carry-on baggage model. “Our new carry-on baggage model provides more choice to customers while helping to keep our fares low,” Tully said. The changes follow “extensive research and feedback from customers and crew” which found frustrations with weighing bags and finding weight in overhead lockers, Jetstar said. If you’re travelling with an infant you can bring an extra under-the-seat bag at no extra cost.